TRAJECTORY-DEPENDENT CHARGE-EXCHANGE IN ALKALI ION-SCATTERING FROM A CLEAN METAL-SURFACE

被引：36

作者：

KELLER, CA

DIRUBIO, CA

KIMMEL, GA

COOPER, BH

机构：

[1] Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.75.1654

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first evidence for trajectory-dependent neutralization of hyperthermal energy alkali ions scattered from a clean metal surface. We have scattered 7.5 and 50 eV Na+ from Cu(001) and found that, for atoms leaving the surface with the same velocity and direction, the measured neutral fraction varies by a factor of 7 depending on the type of surface collision. The collision types are identified with scattering simulations. We suggest that coupling of the charge exchange and collision dynamics is responsible for the variations in neutralization.

引用

页码：1654 / 1657

页数：4

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